/*
 * Copyright 2009-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.batch.core.step;

import java.util.Collection;

import org.springframework.batch.core.Step;
import org.springframework.lang.Nullable;

/**
 * Interface for locating a {@link Step} instance by name.
 * 
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
 *
 */
public interface StepLocator {
	
	Collection<String> getStepNames();

	@Nullable
	Step getStep(String stepName);

}
